| 摘要 |
The method involves providing measured current values to an evaluating unit (23) by clamp-on ammeters (5, 7) and a measuring data determining unit (3) for determining efficiency of photovoltaic (PV) units of a PV system (A), where the PV units are operated at same or different operating voltages (U). One of the PV units with low current is determined as the PV unit with low power, and a location of measuring current of the PV units is recorded by a global positioning system (GPS), a radio frequency identification (RFID) chip and barcode at a time period of current measurement. An independent claim is also included for a mobile device for synchronized measurement of current of photovoltaic units comprising a measuring data evaluating unit attached to clamp-on ammeters. |
